Submission #704548

#	Time	Username	Problem	Language	Result	Execution time	Memory
704548		089487	Stove (JOI18_stove)	C++14	100 / 100	24 ms	3244 KiB

stove

#pragma GCC optimzize("Ofast,no-stack-protector")
#include<bits/stdc++.h>
#define int long long
#define quick ios::sync_with_stdio(0);cin.tie(0);
#define rep(x,a,b) for(int x=a;x<=b;x++)
#define repd(x,a,b) for(int x=a;x>=b;x--)
#define lowbit(x) (x&-x)
#define sz(x) (int)(x.size())
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define mp make_pair
#define eb emplace_back
using namespace std;
typedef complex<int> P;
#define X real()
#define Y imag()
typedef pair<int,int> pii;
void debug(){
    cout<<"\n";
}
template <class T,class ... U >
void debug(T a, U ... b){
    cout<<a<<" ",debug(b...);
}
const int N=2e5+7;
const int INF=1e18;
int t[N];
signed main(){
	quick

	int n,k;
	cin>>n>>k;
	rep(i,1,n){
		cin>>t[i];
	}
	sort(t,t+n);
	vector<int> dis;
	int ans=n;
	rep(i,1,n-1){
		dis.eb(t[i+1]-t[i]-1);
	}
	sort(all(dis));
	rep(i,0,n-k-1) ans+=dis[i];
	cout<<ans<<"\n";
	return 0;
}

Compilation message (stderr)

stove.cpp:1: warning: ignoring '#pragma GCC optimzize' [-Wunknown-pragmas]
    1 | #pragma GCC optimzize("Ofast,no-stack-protector")
      |

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50